20871835

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^2$

素因数の和:231

約数の個数: 24

約数和(自身を含む): 27686016

約数和(自身を除く): 6814181

約数列:

[1, 5, 17, 31, 85, 89, 155, 445, 527, 1513, 2635, 2759, 7565, 7921, 13795, 39605, 46903, 134657, 234515, 245551, 673285, 1227755, 4174367, 20871835]

約数ペア:

[(1, 20871835), (5, 4174367), (17, 1227755), (31, 673285), (85, 245551), (89, 234515), (155, 134657), (445, 46903), (527, 39605), (1513, 13795), (2635, 7921), (2759, 7565)]